Hi
I posted this yesterday on the TCP/IP listserv but in reality its more of z/os multitasking issue thanks From: Joseph Reichman <[email protected]> Sent: Wednesday, January 2, 2019 3:21 PM To: 'IBM TCP/IP List' <[email protected]> Subject: Concurrent Server Task Dispatch issue Hi I have a concurrent server with four subtasks. I used the basic design from section H a beginners guide to TCP/IP programming. One difference in mine. The subtask(s) handle multiple I/O's And there for they too have a SELECT API not for listening to incoming connections but to handle reads on multiple sockets Both the main Task and subtasks have multiple ECB waits. The Main Task waits for on 2 ecbs 1) Select 2) Modify COMECBPT. The problem I am having is with the modify command it works once and doesn't work 5 times why because the main task hardly gets control. Both the main and Subtasks have time out values so I can WTO a message when there is a TIMEOUT I can see the WTO from subtask time out but not the main it does pop up once in a while I tried using CALLDISP on the subtask TIMEOUT CHAP playing around with the DPMOD and LPMOD on the ATTACH but the best I could up with was having the Modify command work once out of 5 times Again from the WTO's at TIMEOUT on the select I can see when the subtask are executing and the main task Any Suggestions are appreciated thanks ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
